Facile, high-yielding preparation of pyrrolidinium, piperidinium, morpholinium and 2,3-dihydro-1H-isoindolinium salts and ionic liquids from secondary amines

High yield and purity heterocyclic salts and ionic liquids can be obtainedviathe microwave irradiation of equimolar amounts of a secondary amine and an α,ω-dibromoalkane in water in the presence of K₂CO₃followed by anion exchange.